Commentator: From Alien Nations to Global Community: Political, Cultural, and Environmental Approaches to Space History in an Unstable World, American Historical Association Annual Meeting, Atlanta, GA, January 4, 2007.

Panelist: The Life Cycle of Presidential Libraries: From Processing to Declassification to Education, Jimmy Carter Presidential Library, a session of the American Historical Association Annual Meeting, Atlanta, GA, January 6, 2007.

Paper: "Symposium on Presidential and Congressional Papers," The John Brademas Center for the Study of Congress, New York, NY, October 25, 2005.

Panelist: Classified National Security Information: The Vision, the Reality, the Future. The National Archives' Information Security Oversight Office Symposium, October 25, 2005.

Commentator: Americans and Military Occupations in in the Pacific, April 1, 2005, Organization of American Historians Annual Meeting, San Francisco, CA.

Panelist: Secrecy and Access in the Archives: Washington, Moscow, and the Vatican, January 8, 2005, American Historical Association Annual Meeting, Seattle, WA.

Paper: "9/11 and Foreign Policy," June 2004, Society for Historians of American Foreign Relations Annual Meeting, University of Texas at Austin, Austin, TX.

Panelist: Secrecy and the Editing of History, National Freedom of Information Day Conference, March 16, 2004, Rooftop Conference Center, Arlington, VA.

Speech: "Sowing the Seeds of Secrecy," March 25, 2000, "Point of No Return: 1950, the Cold War, and the Twentieth Century," University of Iowa, Iowa City, IA.

Paper: "Where Will the Raw Materials of History Come From," January 15, 2000, "Does the Past Have a Future? A Conference Celebrating Twenty Years of Public History," Arizona State University, Tempe, AZ.

Paper: "The Influence on Theodore Roosevelt's Foreign Policies of His Experience as Assistant Secretary of the Navy and Service in the Spanish-American War," October 21, 1998, "Theodore Roosevelt, the U.S. Navy, and the Spanish-American War: A Symposium," Naval Heritage Center, U.S. Navy Memorial, Washington, DC.

Paper: "Obsessed with Cuba: New Evidence from the Kennedy Years, 1961-1963," October 23-24, 1998, "Revisionism in U.S. Foreign Relations: A Tribute to the Scholarship of Thomas G. Paterson," Thomas J. Dodd Research Center, University of Connecticut, Storrs, CT.

Paper: "NSC-10/2: The New Covert Action Mechanism, 1948," June 18, 1998, Society for Historians of American Foreign Relations Annual Meeting, University of Maryland, College Park, MD.

Panelist: The John F. Kennedy Assassination Records Review Board, November 1997, American Society of Access Professionals.

Panelist, Open Secrets: An Interim Report of the John F. Kennedy Assassination Records Review Board, March 1996, Organization of American Historians Annual Meeting, Palmer House Hilton, Chicago, IL.

Commentator: Presidents and the Military in the Twentieth Century, March 29, 1996, Organization of American Historians Annual Meeting, Palmer House Hilton, Chicago, IL.

Panelist: Reporting on Historical Controversy: A Panel Discussion on Covering History in the Wake of the Enola Gay Controversy, June 26, 1995, National Press Club, Washington, DC.

Panelist: The Electronic Freedom of Information Act (FOIA), April 10, 1995, District of Columbia Library Association and the Government Documents Roundtable of ALA, Rosslyn Westpark Hotel, Arlington, VA.

Panelist: The Enola Gay Exhibit: Should the Smithsonian Satisfy Everyone, December 1994, American University and National Public Radio, Washington, DC.

Paper: "The Outsider as Insider: The Historian as Adviser," October 21, 1994, American Society for Legal History Annual Meeting, Washington, DC.

Panelist: Research, Records, and Declassification, March 18, 1994, "The Origin and Development of the CIA in the Administration of Harry Truman," Harry S. Truman Presidential Library and the Center for the Study of Intelligence, Ritz-Carlton Hotel, Tysons Corner, VA.

Commentator: Harry S. Truman and His Presidency: Post-Liberal and Post-Cold War Assessments, January 1994, American Historical Association Annual Meeting, San Francisco, CA.

Paper: "Frustrations of Scholarly Research in Recent American Documentation," April 21, 1993, University of Maryland Policy Seminar, University of Maryland, College Park, MD.

Paper: "Forging the Cold War National Security Policy: A 'Lesson' from the Past," October 16, 1992, The Future of American National Security Policy, Triangle Universities Security Seminar, Rougement, NC.

Commentator: Public Historians and Scholarship on the Modern State, April 5, 1992, Organization of American Historians Annual Meeting, Chicago, IL.

Lecture: "What Can We Know and When Can We Know It," FOIA and Access to Documents, April 30, 1992, Arizona State University, Phoenix, AZ.

Panelist: The Changing Nature of Documentation and its Impact on Historical Research in Diplomatic History, October 1989, Society of American Archivists Annual Meeting, Clarion Hotel, St. Louis, MO.

Paper: "The Historian's Dilemma, Researching Congress: The Paradox of Sources," A Bicentennial Research Conference on Congress, February 9, 1989, Library of Congress, Washington, DC. http://www.c-spanvideo.org/program/Sour

Paper: "Before the National Security Adviser: Did the NSC Matter," June 10, 1988, Society for Historians of American Foreign Relations Annual Meeting.

Panelist: Oral History in Presidential Libraries, March 1988, Oral History Conference, Mid-Atlantic Region.

Participant: West Point Symposium on the Theory and Practice of National Security, 1960-1968, March 1988, United States Military Academy, West Point, NY.

Panelist: Academic v. Government Sponsored Research, April 1987, Joint Meeting of the National Council on Public History and the Society for History in the Federal Government, Hyatt Regency, Washington, DC.

Paper: 1984, Washington, DC Humanities Council.Hewlett Lecture: "Past, Present, and Future: The Impact of a Changing Environment on Public Records," September 12, 1984, Society for History in the Federal Government.

Commentator: U.S. Expansion, August 1984, Society for Historians of American Foreign Relations Annual Meeting.

Paper: "Writing History under Current Regulations on Declassification," April 1984, Conference on the First Amendment, University of Michigan Law School, Ann Arbor, MI.

Panel Chair: Twentieth Century Research, April 1984, Organization of American Historians Annual Meeting.

Paper: "The Way We Were," October 1983, Association of Documentary Editors, Baltimore, MD.

Address: "In Support of History," October 3, 1983, Annual Conference of History Department Chairs, North Carolina Institute of History.

Paper: "Truman and the NSC," April 1983, Conference on the Truman Presidency, Hofstra University, Hempstead, NY.